//number 正负 ，整数小数，不同进制 2 8 10 16
//string 定义的时候需要使用 '' ""
//boolean true false


/*let age = 25;
let num  = -100.26;

let num2 = 0b101101011;
console.log(num2)
let num8 = 0o14576;
console.log(num8)
let num10 = 444654894646;
let num16 = 0xFF;
console.log(num16)

let flag = true;
console.log(flag)
flag = false;
console.log(flag)

let msg = "皇军托我给您带个话儿";
let num = undefined;
let address = null;*/
// console.log(Number.MAX_VALUE,Number.MIN_VALUE);
//NaN not a number
// console.log(5-"张三");
//boolean = isNaN(判断的变量或者值) 判断变量或者值是不是 不是数据
/*
console.log(isNaN(5))
console.log(isNaN("张三"))*/
// ""   ''  ``
/*
let strMsg3 = "我爱大肘子";*/
// 转义 \"  \'  \\
/*
let html = `<div class="div1"> 这是一个副标题 '测试' 我是一个div</div>`;
console.log(html)*/


let msg = "我是一个\n小天才\n\t锄禾日当午";
console.log(msg)